Centrifugal machine



Oct. 20, 1931. C, SHAPLEY 1,828,548

CENTRIFUGAL MACHINE Filed Aug. 3. 1929 4 Sheets-Sheet l Oct. 20, 1931. c. sHAPLEY CENTRIFUGAL MACHINE Filed Aug. s. lsz

4 Sheets-Sheet 2 IN V EN TOR.

0M @uw ATTORNEYS.

Filed Aug- 5. 1929 4 Sheets-Sheet 3 INVENTOR.

l M u f ATTORNEYS.

Oct. 20, 1931. 1,828,548

C. SHAPLEY CENTRIFUGAL MACHINE 4 Sheets-Sheet 4 Filed Aug. 3. 1929 far Q +33 A f5.2 f 17 IN VEN TOR.

Patented Oei. 20, 1931 PATENT oFricE OOOPEB BEAPLEY, F BISHOP, CALIFORNIA UmBIIUG-AL MACHINE Continuation o! application Serial No. 882,459, med .Tune 2, 1928. This application med 'Lugult l, 1929. Serial No. 388,809.

My invention more particularly relates to a centrifu al machine for separating solids from liquids, and in which the solids are utilized for driving one of the members from the other.

Centrifugal machines for separating solids from liquids have hitherto been made comprising an inner and an outer rotary member, the inner member being provided with a worm. As it is desirable to carry the solid material along longitudinally of the machine as it is separated from the liquid, the inner and outer rotary members have been driven at slightly diii'erent speeds, which required a diierential mechanism which is quite expensive.

In accordance with my invention, the inner and outer rotary members are mounted eocentrically with respect to each other,

thereby providing means for driving one rotary member from the other through the a ency of the solid material, and it therefore dispenses with the usual dii'erential mechanism.

My present application is a continuation of my application Serial No. 282,459, which was filed in the Patent Oilice on or about June 2, 1928.

My invention will best be understood by reference to the accompanyin drawin in which I have illustrated a pre erred em odiment, and in which Fi 1 is a longitudinal section taken through t emachine; Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is ing a portion of the inner end of the outer rotary members on a larger scale; Fig. 4 is a plan view of the inner rotary member, the right-hand portion thereof being shown more or less diagrammatically; Fig. 5 is a diagrammatic view illustratin in an exaggerated way the eccentric relation of the inner and outer rotary members; Fig. 6 is a sectional view similar to Fig. 2 but illustrata modification, and Fig. 7 is a sectional view taken on the line 7--7 o f Fig. 6.

Like reference characters indicate like parts throughout the drawings.

Referring now to the drawings, 10 is the a fragmentary detail view illustratframe of the machine on which are mounted standards 11 and 12 provided with hollow members 13 and 14, respectively in which is received a stationary c lindrica member 15 which is preferabl ho ow and which is preferably prevented rom rotating by set screws 16. The left-hand end of the member 15, as viewed in Fig. 1, is preferably closed by a cap 17, which may be provided with screw threads as at 18, engaging corresponding screw threads on the inner portion of the member 15.

Surrounding the member 15, is an outer rotary member indicated generally at 19, comprising sleeves and 21 surrounding the shaft 15 and spaced therefrom. Plates or discs 22 and 23, preterably circular in forni, at the inner ends thereof are preferably formed integral with the sleeves 20 and 21,

and are formed on their peripheries with recesses 24, in which are received the ends of a screen member indicated generaliy at 25. The screen member 25 comprises generally a foraminous member 26 on the inner side of which is secured a finer metallic screen member 27. The details of the screen ma be the same as that illustrated in an app ication of William C. Laughlin, Serial No. 273,- 670, which was filed in the United States Patent Oilce on or about April 28 1928, and as the details of this screen member constitute no part of my present invention, in order to avoid confusion, they have not been illustrated in detail.

The sleeves 20 and 21 are mounted in pillow blocks 28 and 29, suitable ball bearin s 30 preferably being interposed between eac of the sleeves and its pillow block. The upper portion of the centrifugal machine is enclosed by a removable casing portion 31, which is secured to the frame 10 as by bolts 32. The upper portion of the casing is preferably provided with a series of peripherally extending angle irons 33 for the purpose of strengthening the casing. The outer rotary member, in the embodiment illustrated, is,

driven by a suitable driving member 34, illustrated as a pulley.

An inner rotary member, indicated generally at 35, is, in the embodiment illustrated, mounted for rotation on the shaft 15. The inner rotary member comprises a cylindrical member 36, referably provided with inner annular ribs 3 which, with corres nding ribs 38 mounted on the inner sha 15, form cages for roller bearings l39. A worm conveyor is secured to the cylindrical member 36 and preferably comprises a'lurality of radially extending spokes 40, w ich are preferably arranged in rows longitudinally of the machine, and are also preferably formed inte ally with base ortions 41 which exten longitudinally of t e cylindrical member 36, and are secured thereto as by bolts 42. Plates 43 are secured to the outer ends of the spokes'40, as by screws 44 forming a helical worm which moves the solid material longitudinally of the machine.

The inner and outer rotary members 35 and 19, respectively, are mounted eccentrically with respect to each other, so that the axis 351 of the inner rotary member is oliset from the axis 191 of the outer rotary member,`and is preferably located below the same as best shown in Fig. 5. The mixture of the solid and liquid material is introduced to the centrifugal machine through the righthand end of the hollow member 15 through a connection not illustrated, suitable openings 45 being provided in the said member to permit the material to pass to the screw conveyor.

The operation of the centrifugal machine embodyin my invention will readily be understoo from the foregoing description, and is as follows:

The material is introduced to the machine through the right-hand end of the hollow shaft 15 as previously indicated, passes through the o nings 45, is received between the blades oethe` screw conveyor and is thrown outwardly by centrifugal action. The liquid passes through the screen, and the solid material is deposited against the screen member 27. The outer rotary member is driven by the`Y member 34 and, of course rotates the solid material which is received against the screen, and the solid material is utilized to rotate the inner rotary member from the outer rotary member.

The solid material which is, thrown outwardly againstthe screen member 27, is forcibly rotated, therefore, by the outer rotary member, and the engagement of this solid material with the blades of the inner rotary member serves to rotate the inner rotary member, and since the two members are arranged eocentrically with reference to each other, the inner member is rotated at a slightly higher rate of speed than the outer rotary member, as will be evident from Fig. 5.

The blades of the inner rotary member are preferably so arranged that they just eng the screen member of the outer rotary mem r. It will be evident that since the two members are eccentric with reference to each other, the radius of the inner rota member is necessarily less than that of the outer rotary member. When the solid material, which is being carried by the outer rotary member, therefore, engages the inner rotary member, it moves the latter, and moves it at a slightly higher rate of speed than the outer rotary member, so that the conveyor, which forms a part of the inner rotary member, carries the solid material alon longitudinally of the machine. It will, o course, be understood that as the mixture of liquid and solids is carried alon the liquid is successivel passed through t e screen member, the solid material thereb becoming drieras it moves longitudinally of the machine until it reaches a chamber 46 at the left end of the machine, from which the solid material is dischar ed through an opening 47. The liquid is ischarged into chambers 48 from which it is discharged through suitable pipes 49.

Any air entrained in the liquid is discharged through an air trap 50 located on the to portion of the machine.

In igs. 6 and 7 I have illustrated a modification of my invention in which auxiliary blades 431 are loosely mounted on the s iral conve or preferably on the plates 43, by bolts 432 w ich ass through o enings 433 at each end of the lades 431 as illlustrated in Fig. 6. The openings 433 are larger than the bolts 432, so that the blades 431 are free to move outwardly due to the action of centrifugal force against the screen 25. B providing the movable blades 431, whic are thus thrown outwardly into continuous engagement with the screen, the outer ortions of the movable blades are retained 1n the solid material, and thus avoids the necessity for the edges of the blades cuttin into the solid material during the rotation t ereof.

I claim:

1. In a centrifugal machine for separating solid material from a liquid, an outer rotary screen member and an inner rotary member provided with a helical worm conveyor, means for forcibly rotating the outerscreen member, and means for utilizing the solid material for rotating the inner member at a higher rate of s ed than the outer member.

2. In a centri ugal machine for separating solid material from a liquid, an outer rotary screen member and an inner rotary member provided with a helical worm conveyor comprising blades outwardly movable into engagement with said screen members, means for forcibly rotating the outer screen member, and means for utilizing the solid material for rotatirg the inner member at a higher rate of spee than the outer member.

3. In a centrifugal machine for separating solid material from a liquid, an outer rotary screen member and an inner rotary member provided with a helical worm conveyor comprisin blades loosely mounted thereon and movah e outwardly into en agement with said screen members, means orl forcibly rotating the outer screen member, and means for utilizing the solid material for rotating the inner member at a higher rate of speed than the outer member.

4. In a centrifugal machine for separating solid material from a liquid, an outer rotary drum member comprising a screen, means for forcibly rotating said member, an inner rotary member provided with a worm conve or, the axis of said inner member being o set from the axis of said outer member, whereby the inner member is rotated from the outer through the medium of the solid material.

5. In a centrifugal machine for separating solid material from a liquid, an outer rotary member comprising a screen and having a shaft mounted in bearings, means for forcibly rotating said outer member, a stationary shaft mounted eccentrically with respect to said outer member, and an inner rotary member provided with a worm conveyor and having its bearings on said stationary shaft.

6. In a centrifugal machine for separating i solid material from a liquid, an outer rotary member comprising a screen and having a shaft mounted in bearings, means for rotating said outer member, a stationary shaft mounted in bearings without the bearings for said outer rotary member and having its axislocated below the axis of said outer rotary member, and an inner rotary member having its bearin s on said stationary shaft and provided with a worm conveyor the lower edge of which is located adjacent to said screen. e

COOPER SHAPLEY.

solid material from a. liquid, an outer rotary screen member and an inner rotary member provided with a helical worm conveyor comprising blades loosely mounted thereon and movab e outwardly into en agement with said screen members, means or forcibly rotating the outer screen member, and means for utilizing the solid material for rotating the inner member at a higher rate of speed than the outer member.

4. In a centrifugal machine for separating Solid material from a liquid, an outer rotary drum member comprising a. screen, means for forcibly rotating said member, an inner rotary member provided with a worm conve or, the axis of said inner member being o set from the axis of said outer member, whereby the inner member is rotated from the outer through the medium of the solid material.

5. In a centrifugal machine for separating solid material from a liquid, an outer rotary member comprising a screen and having a shaft mounted in bearings, means for forcibly rotating said outer member, a stationary shaft mounted eccentrically with respect to said outer member, and an inner rotary member provided with a worm conveyor and having its bearings on said stationary shaft.

6. I n a centrifugal machine for separating e solid material from a liquid, an outer rotary member comprising a screen and having a. shaft mounted in bearings, means for rotating said outer member, a stationary shaft mounted in bearings without the bearings for said outer rotary member and having its axisA located below the axis of said outer rotary member, and an inner rotary member having its bearings on said stationary shaft and provided with a worm conveyor the lower edge of which is located adjacent to said screen.

COOPER SHAPLEY.

` CERTIFICATE or CORRECTION.

Patent No. 1,828,548.- October 20, 1931.

COOPER SHAPLEY.

It is hereh'y certified that the above numbered patent was erroneously issued to the inventor said "Shapley" whereas said patent should have been issued to "Laughlin Filter Company, of Elizabeth, N. J., a corporation oi Delaware", as assignee of the entire interest in said invention, es shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 29th day of November, A. D. 1932'.

M. J. Moore,

(Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,828,548. October 20, 1931.

COOPER SHAPLEY.

It is hereby certified that the above numbered patent was erroneously issued to the inventor said "Shapley" whereas said patent should have been issued to "Laughlin Filter Company, of Elizabeth, N. J., a corporation of Delaware", as assignee of the entire interest in said invention, as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may confonn to the record of the case in the Patent Office.

Signed and sealed this 29th day of November, A. D. 1932.

M. J. Moore,

(Seal) Acting Conmisaioner of Patents. 

